A little problem in save_crops.m

[moorejee]

Hi, I meet a problem about padding. In save_crops.m the code calculate the padding coordinates about xmin, xmax, ymin, ymax. But there only considering the left_pad and top_pad. I think here should calculate right_pad, down_pad for xmax, ymax respectively. How do you think?

form save_crops.m 91row
%check out-of-bounds coordinates, and set them to avg_chans
context_xmin = round(pos(2) - c(2));
context_xmax = context_xmin + sz(2) - 1;
context_ymin = round(pos(1) - c(1));
context_ymax = context_ymin + sz(1) - 1;
left_pad = double(max(0, 1-context_xmin));
top_pad = double(max(0, 1-context_ymin));
right_pad = double(max(0, context_xmax - im_sz(2)));
bottom_pad = double(max(0, context_ymax - im_sz(1)));

context_xmin = context_xmin + left_pad;
context_xmax = context_xmax + left_pad;
context_ymin = context_ymin + top_pad;
context_ymax = context_ymax + top_pad;

[moorejee]

Oh, I understand the code now. It is just an op that ignores the padding of left and top. It is a special method to select the patch.

[guwenning]

@moorejee Hello, I don't quite understand the 8 coordinates in ground_truth. I used a trace with a number of coordinates of 4. I found that the coordinates of the first frame are not completely wrapped.

[CXSunshine]

Ｄo you meet this problem?
save_crops(imdb_video, 1, 1000, '/home/xchen/ILSVRC2015','/home/xchen/curated/ILSVRC2015')
Undefined function or variable 'imdb_video'.